Multiply a 3-digit by a 1-digit number with no regroups
I can multiply a 3-digit by a 1-digit number using expanded and short multiplication (no regroups).
Multiply a 3-digit by a 1-digit number with no regroups
I can multiply a 3-digit by a 1-digit number using expanded and short multiplication (no regroups).
Lesson details
Key learning points
- Expanded multiplication of a 3-digit by a 1-digit number will give three numbers to add to calculate the overall product
- Short multiplication builds the overall product from the ones column to the hundreds with no regrouping.
- The partial products can be seen in the expanded and short multiplication strategies.
Common misconception
Misalignment of digits when setting out short multiplication.
Clear teacher modelling, ask pupils 'what does this digit represent?' Return to expanded layout briefly, before re-doing the problem.
Keywords
Expanded multiplication - A way of recording the steps of a calculation focusing on partitioning one or more factors and showing partial products.
Short multiplication - A way of recording using columns to set out and calculate a multiplication.
Factors - Numbers we can multiply together to get another number.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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